-
公开(公告)号：US20120114081A1
公开(公告)日：2012-05-10
申请号：US13352818
申请日：2012-01-18
IPC分类号： H04L27/06
CPC分类号： H04B1/1036 , G01R23/163
摘要： A system and technique for providing to flexible, programmable frequency estimators and spectrum analyzers that can operate over extremely large bandwidths and yet provide high spectral resolution are described. The acquisition time and hardware complexity of one technique scale as O(N), where N denotes the number of frequency bins acquired. Embodiments are disclosed in which architectures are implemented using exponentially-tapered transmission lines and filter cascades.
摘要翻译： 描述了一种用于提供灵活的可编程频率估计器和频谱分析仪的系统和技术，其可以在极大的带宽上工作并且还提供高的光谱分辨率。 一种技术尺度的采集时间和硬件复杂度为O（N），其中N表示获取的频率块的数量。 公开了实施例，其中使用指数级锥形传输线和滤波器级联来实现架构。
-
公开(公告)号：US08498366B2
公开(公告)日：2013-07-30
申请号：US13352818
申请日：2012-01-18
IPC分类号： H04L27/06
CPC分类号： H04B1/1036 , G01R23/163
摘要： A system and technique for providing to flexible, programmable frequency estimators and spectrum analyzers that can operate over extremely large bandwidths and yet provide high spectral resolution are described. The system and technique may include a cascaded super-heterodyne apparatus for estimating a frequency and a bandwidth of signals proximate in frequency to a desired signal, a tunable filter coupled to an input of a receiver, and a tuner which receives a signal from said cascaded super-heterodyne apparatus and tunes the filter to filter out unwanted signals from the receiver.
摘要翻译： 描述了一种用于提供灵活的可编程频率估计器和频谱分析仪的系统和技术，其可以在极大的带宽上工作并且还提供高的光谱分辨率。 该系统和技术可以包括用于估计频率接近于期望信号的信号的频率和带宽的级联超外差设备，耦合到接收机的输入的可调谐滤波器以及从所述级联接收信号的调谐器 超外差设备并调谐滤波器以滤除接收机中的不需要的信号。
-
公开(公告)号：US08121223B2
公开(公告)日：2012-02-21
申请号：US11958990
申请日：2007-12-18
IPC分类号： H04L27/00
CPC分类号： H04B1/1036 , G01R23/163
摘要： A system and technique for providing to flexible, programmable frequency estimators and spectrum analyzers that can operate over extremely large bandwidths and yet provide high spectral resolution are described. The acquisition time and hardware complexity of one technique scale as O(N), where N denotes the number of frequency bins acquired. Embodiments are disclosed in which architectures are implemented using exponentially-tapered transmission lines and filter cascades.
摘要翻译： 描述了一种用于提供灵活的可编程频率估计器和频谱分析仪的系统和技术，其可以在极大的带宽上工作并且还提供高的光谱分辨率。 一种技术尺度的采集时间和硬件复杂度为O（N），其中N表示获取的频率块的数量。 公开了实施例，其中使用指数级锥形传输线和滤波器级联来实现架构。
-
公开(公告)号：US20080240301A1
公开(公告)日：2008-10-02
申请号：US11958990
申请日：2007-12-18
IPC分类号： H04L27/06
CPC分类号： H04B1/1036 , G01R23/163
摘要： A system and technique for providing to flexible, programmable frequency estimators and spectrum analyzers that can operate over extremely large bandwidths and yet provide high spectral resolution are described. The acquisition time and hardware complexity of one technique scale as O(N), where N denotes the number of frequency bins acquired. Embodiments are disclosed in which architectures are implemented using exponentially-tapered transmission lines and filter cascades.
摘要翻译： 描述了一种用于提供灵活的可编程频率估计器和频谱分析仪的系统和技术，其可以在极大的带宽上工作并且还提供高的光谱分辨率。 一种技术尺度的采集时间和硬件复杂度为O（N），其中N表示获取的频率块的数量。 公开了实施例，其中使用指数级锥形传输线和滤波器级联来实现架构。
-
公开(公告)号：US07095256B1
公开(公告)日：2006-08-22
申请号：US10892669
申请日：2004-07-16
IPC分类号： G01R19/00
CPC分类号： H03D1/18 , H03F1/02 , H03F3/45183 , H03F2200/102
摘要： An envelope detector system is disclosed for detecting an envelope in a system input signal. The envelope detector system includes an input node for receiving an input voltage signal, a transconducting amplifier for receiving the input voltage signal and producing an input current signal, a current mirror network for receiving the input current signal and for producing a current output signal, a capacitor for receiving the current output signal, and a rectifier output node for providing a rectifier output current signal. The capacitor is coupled to an input of the transconducting amplifier. The rectifier output current signal is fed into the current-mode wide-dynamic-range peak detector. The peak detector produces the envelope detector output current signal.
摘要翻译： 公开了一种用于检测系统输入信号中的包络的包络检测器系统。 包络检测器系统包括用于接收输入电压信号的输入节点，用于接收输入电压信号并产生输入电流信号的跨导放大器，用于接收输入电流信号并产生电流输出信号的电流镜网络， 用于接收电流输出信号的电容器，以及用于提供整流器输出电流信号的整流器输出节点。 电容器耦合到跨导放大器的输入端。 整流器输出电流信号馈送到电流模式宽动态范围峰值检测器。 峰值检测器产生包络检测器输出电流信号。
-
-
-
-
搜索结果
5 条记录 (耗时 0.019 秒)
